Thermal management: Effect of heat shielding using thin metal cylinders on a dispenser cathode temperature

This paper will present results of research on the effect of heat shielding/sinking on cathode temperature. It will show how the alteration of heat shield thickness, space between cathode wall and heat shield, and/or space between multiple heat shields affects the cathode surface temperature. Results will be compared with theoretical results based on a radiation heat transfer theory in order to find a reliable way to include this theory in the design process.